Describe the overall structure of DNA (Please can you word in your own words and not copy and paste)

German cockroaches, bulging eyes, bu, are recessive to normal eyes, bu , and curved wings, cv, are recessive to straight wings, cv . both traits are encoded by autosomal genes that are linked. a cockroach has genotype bu bu cv cv, and the genes are in repulsion. which set of genes will be found in the most common gametes produced by this cockroach?

This is so important ugh its 25 points

Why do we perceive objects as retaining their brightness under different lighting levels?